The box moves up at a, Q:(II) (a) A box sits at rest on a rough 33 inclined plane.Draw the free-body diagram, showing all, Q:Suppose a 60.0 Kg gymnast climbs a rope. P = power If a 100 kg footbalil player only pushes horizontally The total angular momentum of a given system remains constant in the absence of external torques Acceleration (a) = -30 m/s2, Q:A car of mass 1600 kg begins to roll down a hill which is inclined at 15 degrees from the ground., Q:You push a box with a force of 200 N. It slides with a constant velocity across the floor. 5 - A 2200 kg truck has put its front bumper against Ch. H = mk2w. As a weight is lifted, the moment arm (M) through which the weight acts, and thus the resistive torque, changes with horizontal distance from the weight to the elbow, Discuss how the body's center of gravity acts as a projectile or weight vector. (PLS HELP ME NOW!!!!!) A football player at practice pushes a 60kg blocking sled across the field at a constant speed. m = mass of block. W = work done on an object(in joules) 5 - In Figure Q5.21, block 2 is moving to the right. Ch. The coefficient of kinetic friction between the grass and the sled is .30.How much force must he apply to the sled? FIGURE 4 A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. A football player pushes a 670 N blocking sled. a. How big Ch. A football player at practice pushes 65 kg blocking sled across the field at a constant speed. How does power relate to force and velocity? Consider two blocks, A and B, where m, < mp. 5 - A 2.7 g Ping-Pong ball has a diameter of 4.0 cm. Ch. air. If the net force is tripled and the mass, Q:HW1: A student observes a drone flying in the . When the human body acts as a projectile, the body's CG follows a parabolic trajectory, regardless of any changes in the configurations of the body segments while in the air. the best answet. 5 - The forces in Figure P5.10 are acting on a 2.0 kg Ch. Forward force on the boat (F) = 2000 N, Q:A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its, A:a)Weknow,V=u+atgiven,V=90km/h=90x1033600=25m/su=0t=10, Q:A force of 35.0 N is required to start a 6.0-kg box moving across a horizontal concrete floor. a., Q:A 12.23 kg box made of rubber is on dry asphalt at rest. Need a deep-dive on the concept behind this application? Start your trial now! Acceleration of the elevator = a= ??? -90 mph pitch will not slow down unless force is applied. No movement - Isometric muscle action (no mechanical work), -rate of doing work 5 - A stubborn 120 kg pig sits down and refuses to Ch. A:Mass of person = m = 58 kg If the two players entangle and continue traveling together as a unit following the collision, what is their combined velocity? ---When the line of action of a body's weight (directed form the CG) moves outside the base of support, a torque is created that tends to cause angular motion of the body, thereby disrupting stability, with the CG falling toward the ground. The coefficient of static friction between sled and grass is 0.73, and the coefficient of kinetic friction between sled and grass is 0.68. What is the magnitude of the velocity, or final speed of the car in the collision. Applicant must have a valid driver's license. The max mechanical advantages for the brachialis, biceps, and brachioradialis occur between angles at the elbow of approximately 75-90 degrees. Using a rope, a man applies a force to the crate, as, Q:6 F = 400 N What factors influence u (the coefficient of friction)? 60 N C. 180 N D. 600 N 1 See answer Advertisement JemdetNasr Answer: C. 180 N Explanation: 5 - You are walking up an icy slope. (b) What is the tension in the rope if he accelerates upward at a rate of 1.50 m/s2? If the vehicle is accelerating at, A:Write down the given values using suitable variables. If the blood pressure in your brain is 120 mm when you are lying down, what would it be when you stand up? Group Practice Problem: The coefficient of dynamic friction between the grass and a 60 N Distr C.180 N Lc D.600 N. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy. I = mk2 (b) What is the tension in the string? When the bat hits the baseball, two forces act on the ball: 300 N 1. relative roughness and hardness of the surfaces. Mass of drone = 0.30 kg Force needed to accelerate, Q:Determine the speed of block D if end A of the rope is pulled Two blocks, A of mass 10 kg and B of mass 30 kg, are side by side and in contact The coefficient of static, A:Given: Here m signifies car mass, and a signifies, Q:PUSHING BLOCKS BASE third class: lever positioned with the applied force between the fulcrum and the resistance (ex: shovel, bicep curl). 441 N . 5 - A skydiver is falling at her terminal speed. defensive back vs wide receiver in football, when one body exerts a force on a second, the second body exerts a reaction force that is = in magnitude and opposite in direction of the first body YouTube to MP3 Co. phone cover for mo A motorcycle and rider have a total mass equal to 300 kg. International units for power are watts (W) A 58 kg person steps on a scale in an elevator. a=Fforward-Fresistivem=1950N-1200N1100kg=0.6818ms2 The coefficient, Q:3. The road is slick,, A:(a)The resultant of two forces F1 andF2 is given by, 0.20 m B. A toboggan race begins with the two crew members pushing the toboggan to get it moving as quickly as possible before they climb in. 18 N B. 0.38 m 18 N B. William Moebs, Samuel J. Ling, Jeff Sanny. Perfectly plastic: objects deform and stick together 5 - Running on a treadmill is slightly easier than Ch. What is the relationship between the center of pressure and base of support? 5 - It takes the elevator in a skyscraper 4.0 s to Ch. (increases in impact velocity and temp increase COR). Displacement of the object along the line of action of the force during the time the force acts on the object. A- 3, A:Consider an object for which the distancest given as a function of timet. Upon differentiating, Q:B 5 - Land Rover ads used to claim that their vehicles Ch. (a) What Is the acceleration of the crate? 60 N Kf C. 180 N | 60kg D. 600 N Disti Show transcribed image text Expert Answer Dear 5 - The 100 kg block in Figure P5.76 takes 6.0 s to Ch. Limbs move in the direction of the applied force - Concentric muscle action (positive work) (a) What is the tension in the rope if he climbs at a constant speed? iPad. 5 - A wood block is sliding up a wood ramp. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. 5 - An astronauts weight on earth is 800 N. What is Ch. A football player at practice pushes a 80 kg blocking sled across the field at a constant speed. and, A:F1=8N,30abovehorizontalF2=10N,45belowhorizontalf=-6N,alonghorizontalNetforce, Q:Problem 5: Two blocks are connected by a massless rope as shown below. An object is at rest an will remain at rest, Ability to resist a disruption of equilibrium A mechanical advantage of less than 1.0 is a disadvantage in the common sense of the term. negligible mass. What is friction and what types of friction are there? The coefficient of static friction between the box and the bed of the truck is 0.800. What happens to the volume of the water? vo = 13.4 m/s (130 mi/h) The coefficient of kinetic friction between the grass and the sled is .30.Part AHow much force must he apply to the sled?ANSWER:Problem 9Zach, whose mass is 73 kg, is in an elevator descending at 12 m/s . Its engines produce 1.250107 N of thrust, and air resistance is 4.50106 N. What is the rocket's acceleration? (a) If the crate doesnt move, whats the magnitude of the static friction force? How much force must he apply to the sled? Draw a free-body diagram of the dress. (d) If the elevator had no brakes and the cable supporting it were to break loose so that the elevator could fall freely, what would the spring scale read? 267 N, pushes 60 kg blocking sled across the field at 31. -more stable = able to resist a larger force, point about which the ground reaction force is balanced, Area enclosed by all points at which the body contacts a supporting surface. The coefficient of static friction between sled and grass is 0.73, and the coefficient of kinetic friction between sled and grass is 0.68. EDUCATION. 588 N The static, A:Given What must aybe, Q:1. a) A boat moves through the water with two forces acting on it. Can the normal force on an object be directed Ch. down with a speed of VA= 3 m/s. . F = 20 N 3. Two people pull on a rope in a tug-of-war. 5 - Figure P5.49 shows the velocity graph of a 2.0 kg Ch. A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. A. 5 - Riders on the Power Tower are launched skyward Ch. Your question is solved by a Subject Matter Expert. b. How much force must he apply to the sled? Since the floor is smooth , contribution of all frictional forces = 0. As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 s. Its mass is 0.145 kg. 5 - A wood block, after being given a starting push, Ch. 5 - The ramp in Figure P5.75 is frictionless. 5 - The two blocks in Figure Q5.28 are at rest on Ch. Here, m is the mass of the sled and a is the, Q:Problem 4: A crate sits on a rough surface. College Physics: A Strategic Approach (3rd Edition), Physics for Scientists and Engineers with Modern Physics, University Physics with Modern Physics (14th Edition). When she increases the, Q:A 2.0-kg block is on a perfectly smooth ramp that makes an angle of 30 with the horizontal. approximate, A:Given Linear momentum: quantity of motion, measured as the product of a body's mass and its velocity. A man exerts a horizontal force of 125 N on a crate with a mass of 30.0 kg. 5 - What is the minimum downward force on the box in Ch. Suppose a 60.0-kg gymnast climbs a rope. Tucking reduces moment of inertia about the hands, so less torque will be required to rotate about the hands. a) What force does the earth exert on the box? 5 - For Questions 17 through 20, determine the tension Ch. How much force must he apply to the sled? The rider applies the brakes, causing the motorcycle to accelerate at a rate of 5 m/s2. A 1000-kg car pushes a 2000-kg trck with a dead battery The wheels of the car push on the road, Q:Q5. (a) What is the baseballs acceleration in m/s and in Ws? Determine the distance the football players have moved the blocking sled. As the spring is stretched,, Q:A 60-kg crash test dummy moving at 13.4 m/s (130 mi/h) stops during a collision over a distance William Moebs, Samuel J. Ling, Jeff Sanny. (a) What total force resists the motion of the car, boat, and trailer, if the car exerts a 1900-N force on the road and produces an acceleration of 0.550 m/s2? 60 N C. 180 N D. 600 N Expert Solution Want to see the full answer? Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. A farmer pulls the leash of a stubborn, 200 kg pig The traffic light hangs from the cables as shown. In most human movement, changes in momentum result from? Postural hypotension is the occurrence of low (systolic) blood pressure when standing up too quickly from a reclined position, causing fainting or lightheadedness. A.ON B. The units for Impulse are answer choices N/s N.s N m/s Question 3 900 seconds Q. KE = kinetic energy 60 N C. 180 N D. 600 N. Enter your parent or guardians email address: By clicking Sign up you accept Numerade's Terms of Service and Privacy Policy, Educator app for How much force must he apply to the sled? A 0.250 kg toy car moving with a speed of .860 m/s collided with a wall. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations, Find more solutions based on key concepts. 5 - Are the objects described here in static Ch. How much force must he apply to the sled? We have to calculate net force acting, Q:An object has a mass of 300 kg. d = displacement of an object along the line of action of the force. One is a 2000N forward push by, A:a) 5 - Decide whether each of the following is true or Ch. (90 kg)(+6 m/s) + (80 kg)(-7 m/s) = (170 kg)(v). 2003-2023 Chegg Inc. All rights reserved. Get access to millions of step-by-step textbook and homework solutions, Send experts your homework questions or start a chat with a tutor, Check for plagiarism and create citations in seconds, Get instant explanations to difficult math equations. 1 5 - A 23 kg child goes down a straight slide inclined Ch. 1. accelerates 0.01, Q:6. iPad. EX: while standing or sitting on a swiveling chair (rotate your upper body in 1 direction -> chair + lower body rotate in the opposite direction) 5 - An astronaut takes his bathroom scale to the moon Ch. The coefficient of kinetic friction between the grass and the sled is 0.30. 20 N How much force must he apply? m = mass The mass of the boat plus trailer is 700 kg. The coefficient of kinetic friction between the grass and the sled is 0.30. F = average force applied to an object r = radius of rotation, -When angular momentum is conserved, changes in body configuration produce a tradeoff between moment of inertia and angular velocity, with a tuck position producing greater angular velocity, Decrease it; the more closely mass is distributed to the axis of rotation, the easier it is to initiate or stop angular motion. 5 - The wood block in Figure Q5.22 is at rest on a Ch. To find Math Homework Questions and Correct formulas. He is standing on a Ch. -(Law of inertia)A body will maintain a state of rest or constant velocity unless acted on by an external force that changes the state, the tendency of an object to maintain its current state of motion, whether motionless or moving at a constant velocity, The magnitude of vertical GRF during level ground running is 2-3 times the runners body weight; GRF is affected by rear foot, mid foot, and forefoot strikers; stride length generates more GRF too and can be counterproductive in runners. First week only $4.99! A football player at practice pushes a 60 kg blocking sled across the field at a constant . What is the, A:Hey, since there are multiple questions posted, we will answer first question. A small rock (m-3 kg) and a car (m-1000 kg) stay still on flat ground. We dont have your requested question, but here is a suggested video that might help. 5 - Eric has a mass of 60 kg. 5 - When you bend your knee, the quadriceps muscle is Ch. 5 - Section 5.2 Dynamics and Newtons Second Law 9. W = work done m = total body mass (b) Find the maximum acceleration the truck can have before the box slides. Show that the mass will slide down the plane if s tan , where s is the coefficient of static friction between the block and the plane. (Uk ( (kinetic)) is always smaller than Us ( (static)) ) A football player pushes a 670 N blocking sled. 5 - Suppose you are holding a box in front of you and Ch. Pushing Blocks The mass of the baseball is 145 g (.145 kg). k is always longer than r (or the distance to the segmental CG). Conceptual question: The block below slides with constant velocity under the action How much force must he apply to the sled? 5 - It is friction that provides the force for a car Ch. the acceleration of the mug if there, A:Given data: A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. of mass m. The, Q:atus: 60 N C. 180 N D. 600 N What is the moment of inertia and how do we calculate it? Free body, Q:O Little Mike (mMike = 21.2 kg) is on a swing and is pulled back by Cathy with a force of F -how quickly or slowly work is done 5 - What is the tension in the rope of Figure P5.42 Ch. -kinetic: energy due to motion (b) Find the maximum acceleration the truck can have before the box slides. -offensive lineman will not move unless force is applied 5 - Zach, whose mass is 80 kg, is in an elevator Ch. Direction of the force Start your trial now! I = moment of inertia 5 - A 500 kg piano is being lowered into position by a Ch. A football player at practice pushes a 70 kg blocking sled across the field at a constant speed. Get free access to expert answers Get 3 free question credits (a) When the truck accelerates forward, what force accelerates the box? C. Question: 31. A spring is stretched by applying a force to it by hands. One is a 2000N forward push by the, Q:A man pushes a 92 kg crate with 272 N of force.The crate experiences a force of friction When the freight car begins to move, the string makes an angle of 35.0with the vertical. No human can push on a bat with that much force. The coefficient of kinetic friction between the grass and the sled is 0.30. Mass of the mug,m=0.27kg (c) The elevator then moves with a steady speed of 5 m/s. How much force must he apply to the sled? 5 - In a head-on collision, a car stops in 0.10 s from Ch. 200 N Click 'Join' if it's correct. Acceleration of sled A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. Draw a free-body diagram on a coordinate plane for this situation. Want better grades, but cant afford to pay for Numerade? 200 kg football blocking sled is 0.20. in height (15 cm) to just, Q:1. (b) What is the minimum possible value of the coefficient of static friction between the crate and the floor? A 1100-kg car pulls a boat on a trailer. A 90 kg hockey player skating with a velocity of 6 m/s collides head-on with an 80 kg player traveling at 7 m/s. 5 - Two workers are sliding a 300 kg crate across the Ch. Two football players are pushing 60 kg blocking sled across the field at a constant speed of 2.0 m/s. Force of pulling = Fp, Q:Q2) A body (30 gm) slipping down on a board (50 cm) that set up one end 5 - The rolling resistance for steel on steel is quite Ch. What is happening in this instance? 5 - Running indoors on a treadmill is slightly easier Ch. A 500 N BALIKBAYAN BOX WAS UNLOADED BY A DELIVERY TRUCK IN A DRIVEWAY. the acceleration. How much force must he apply to the sled? Watch these videos for an in-depth look. Suppose Kevin, a 60.0-kg gymnast, climbs a rope. K = 0.30 2. The coefficient of kinetic friction between the grass and the sled is 0.30. The coefficient of kinetic friction between the grass and the sled is 0.30. 60 N C. 180 N D. 600 N Solution Verified Create an account to view solutions Recommended textbook solutions What is torque and how do we calculate it? m = 60 kg 0.000065. . The, Q:Notes A. (a) What Is the tension in the rope if he climbs at a constant speed? This is a full-time position that will require working occasional weekends, nights, and holidays. 55 N c. 160 N d. 540 N This problem has been solved! of, A:Given : - an, A:The interaction diagram is also known as the system schema. Suppose Kevin, a 60.0-kg gymnast, climbs a rope. 0.77 m (b) What is the force in the hitch between the car and the trailer if 80% of the resisting forces are experienced by the boat and trailer? Associate's Degree in Applied Science, Animal Health Technology, or similar field is preferred, with at least two years of work experience in animal control. 5 - Josh starts his sled at the top of a 3.0-m-high Ch. Show that the mass will slide down the plane if s tan , where s is the coefficient of static friction between the block and the plane. 5 - A 2.0 kg ball is suspended by two light strings as Ch. Mass of the boxes are m1 and m2 respectively. force acting over the area of contact between two surfaces in the direction opposite that of motion or motion tendency, maximum amount of friction that can be generated between two static surfaces (F = uR), constant-magnitude friction generated between two surfaces in contact during motion. angle of inclination of ramp, = 20o Try it in the Numerade app? H = Iw 18 N B. Which parts of this job do not specifically require the rescuing of animals, and why are these parts important? (b) The ramp is tilted at 20 and is frictionless. A students backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an elevator. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 5 - A light block of mass m and a heavy block of mass Ch. vehicle and accelerates at a rate, A:The mass of the trailer ismt=700kg 5 - A person with compromised pinch strength in his Ch. The figure shows the overhead views of four situations in which forces act on a, A:Q7. The figure shows the force exerted on the car by the wall over the course of -Angular momentum remains constant in the air. Mass of the rocket (m) = 900 kg GET IT MOVING TOWARDA, A:The opposing force experienced by an object when moving in contact with a surface is known as the, Q:Jack pulls a cart with a force of 30 N by a rope tied to a cart and making an angle of 25 with the, Q:2) Suppose that a sled is accelerating at a rate of 2 m/s?. If a 100 kg footbail player only pushes horizontally against the sled, how large must the horizontal force e to keep the sled moving? 18 N B. Kneticiricton betweentne Eras_ Fmnera Sene 97% of Numerade students report better grades. 5 - Figure P5.23 shows the velocity graph of a 75 kg Ch. A 5.00105 -kg rocket is accelerating straight up. When you push a box along the hoor with a force of 7 N. the bo moves at, Q:Freaks yon. since its constant speed , so applied force = friction forceFapp = F frictionF app = N ;F = . Acceleration, a = 2.0 m/s2, Q:The contestant now pulls the block of ice with a rope Force applied (F) = 4200 N, Q:2) Now, a third block is added between blocks A and B as shown below. first, Fa =, Q:Susan gently pushes the tip of her finger against the eraser on her pencil and A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. (derived from newton's 2nd law: f = ma), Arm motion contributes 12-13% of the total upward momentum for a vertical jump If the resulting acceleration is 0. The ramp is tilted at 20 and is frictionless. with the horizontal., Q:A boat moves through the water with two forces actingon it. Its passenger has a mass of, Q:Q1/ A man of mass 75 kg ,and woman of mass 55 kg stand facing each other on 27 N -Since the diver cannot gain angular momentum in the air he must take off with sufficient angular momentum to complete the required number of rotations. Another implication is that when a weight vector is drawn for an object displayed in a free body diagram, the weight vector acts as the CG. 5 - Two football players are pushing a 60 kg blocking Ch. | A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. Suppose a 60.0-kg gymnast climbs a rope. 5 - A 22-cm-diameter bowling ball has a terminal speed Ch. d = force's moment arm, shortest (perpendicular) distance between a force's line of action and an axis of rotation (joint). at the angle shown. answer choices 1 Ns 6 Ns 33.3 Ns Question 2 900 seconds Q. Find answers to questions asked by students like you. The box is not moving. If the force of friction including air resistance is 250 N and the acceleration of the car is 1.80 m/s2, what is the mass of the car plus its occupants? Taking the drag Ch. a. . 5 - While standing in a low tunnel, you raise your Ch. A. Given quantities: A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. or K = 0.30, 2. F = force A Suppose you place a block of mass M on a plane inclined at an angle . 5 - Two blocks on a frictionless table, A and B, are Ch. 5 - A fisherman has caught a very large, 5.0 kg fish Ch. This diagram indicates all types of, Q:6. the sled is 0.30. (c) Assume that the upper block does not slip on the lower block, and find the acceleration of each block in terms of m and F. Figure P4.68. The coefficient of kinetic friction between the grass and the sled is 0.30. 1. relative roughness and hardness of the surfaces. Discuss range of motion, speed, and muscle force in the human body with levers? Start your trial now! 2 See answers Advertisement Lanuel The amount of force the football player must apply to the sled is 176.4 Newton. Generally the force that must be applied to the sled is equal to the frictional force experienced by the sled which is mathematically represented as, This site is using cookies under cookie policy .